1. Dig out the ice first (wand, pen, quick selection, magnetic lasso, etc. )，CTRL+J-copy。

2.ctrl+d- Deselect and create a mask.

3. Hold down CTRL and click the ice cube, l Load the ice cube into the selection, CTRL+C-copy. Ctrl+d-After deselecting, hold down alt and click the mask to open it.

4.ctrl+Shift+V- Paste in situ and deselect.

Back to the image, the ice will be buckled. You can see more clearly by adding background color.

Method 2 (using channel matting):

1. Also dig out the ice first.

2. Open the channel, select a color channel with obvious contrast between light and dark, and copy the color channel. (The red channel is used in this picture) Here, the selected channel can be directly dragged to the new layer insert, and the channel can be directly copied.

3. Select the replication channel.

4. Click on the RGB layer, you can directly select the image, and you don't need to point your eyes.

5. Go back to the layer and copy the layer with ctrl+j to get the cut ice. Add background color for easy observation.